Ventilator



J. G. WILLIAMS.

' VENTILATOR.

APPLICATION men APR. 9. 1921.

Patented Oct. 31, 1922.

awuzwkn I, if Q in M Patented @ct. Ell, i922.

JACKSON G. WILLIAMJE, 0E GOUFJ'GIL ELUEFS, IOWA.

VENTILEKTOE.

Application filed. April 9, M21. Serial Kilo. 460,141.

later". of which the following is a specification.

The present invention relates to improvements in ventilators, and it more particular- 1y refers to a simple and inexpensive ventilating device adapted to be att died to the sashes of windows for the purpose of at all times supplying fresh air in suitable quantitiesto the room in which the window is placed.

An object of the invention is to provioe an improved ventilator for permitting air to circulate freely into and out of the rooms of dwelling houses and the like and in which an accurate control of the amount of such air is provided.

A further object of the invention lies in providing a ventilator of the character above indicated in which the parts are susceptible of attachment to the usual form of window sash without any material modification oil the construction thereof except to provide suitable passages therethrough for the amount-of the air currents.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto. 4

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views Fig. 1 a fragmentary view of abuilding with a window equipped with an improved ventilator constructed according to the present invention;

Fig. 2 is an enlarger. fragmentary view of the same; f I

Fig. 3 is a horizontal sectional view taken on the line 3-3 in Fig. 2; and

Fig. 4: is a vertical sectional view taken on the line 4-4 also in Fig. 2.

Referring more particularly to the drawings, 5 represents a wall of a building such as a dwelling house, factory or other enclosed place requiring ventilation, 6 the window casing or frame, and 'Z the usual vertically reciprocating; sash.

In. accordance n rh the present invention the improved ventilating device is mounted directly in the sash "',and for this purpose initially forni transversely through one 1 of'the sash a pair of openings 8 and 9 wuieh open on the exterior into a casing 10 provided with ill to receive screws or other fastenings by which the casing is secured to the outside face ofthe new 1 h T. Thecasi 10 is preferably an elon- (1. sul'iscantis iv narrow construction of i ii a slight depth necessary to house the various pieces of apparatus and to permit them to properly function but tlie housing 10 will in. no way detract from the appearuine of the building or window and will not impede the free movement of the sash.

In the front wall. of the casing 10 I proidc :1. pair of perforations l3 and 14: which preferably placed directly in 'front of openings 8 and 9 in the sash T. Innnediately within the casing 10 and reciprocatin in. cc act with the front wall thereof is a slide plate l5 also formed with open .r s it and 17 of substantially the same size as the perforal' IS 13 and 14; whereby the two sets of peritomtionsand apertures may be brought into complete registry, for instance when the slide plate is moved toits final position at the left. Qf course an adjustrnent of the plate 15 toward the right will effect greater or less closure of the perforations and apertures.

A bar 18 projects outwardly from the plate 15 through the perfora 'ons 13 and M- and equip ed with a thumb or inger piece 19 to aid in the s in of t plate. A svreen 20 is secured to l plate 15, covering the apertures 16 d 17 in order to prevent insects from getting into the casing 10 and finally into the roorn. For this purpose also the openings 8 and?) in the window sash 1' may be covered with mesh 21 carried by a plate secured by screws or other fasteningrs 23 window sash 7.

to' the interior face of the i 1e interior face of the I cept that the ends of said leaf 2 f are removed on diagonal lines 25 and 26 to provide suitable spaces for the passage of the air. It will be noted that these removed parts of the leaf 24: are at the ends of the casing and out of line with the perforations and apertures so that the incoming draft is required to take a zig-zag or circuitous course in getting into the room. This will leaf 24 swings back and forth in a direc tion at right angles to the plane of the leaf, the flange 28 being rounded at its bottom in order to facilitate this oscillating motion. The lower end of the leaf is close to the outer face of the window sash 7 so that currents of air of unusual velocity rushing into the casing 10 will strike the leaf 2% and swing it automatically on its rounded bottom portion and cause it to close against the passages 8 and 9. In this way, when high winds arise, storms or the like, the leaf 24 will close and prevent the entrance of ventilation at this time. When, however,

the storm subsides, the leaf 24 will again spring forwardly and the more gentle air currents may then enter about the sides of the plate. The device therefore provides both an automatic adjustment of the ventilation through the oscillating leaf 24 and also a manual adjustment through the plate 15 which is set by hand and may be changed from time to time during various seasons of the year.

The device will be employed in numbers on the windows of rooms for the purpose, not only of allowing air to enter, but also to allow of the removal of air which has become heated, and for this purpose one of the devices for instance may be placed on the lower rail of the lower window sash, while another device is placed as shown in the drawings on the top rail of the upper sash.

form, and proportions of the various parts, and obviously changes could be made 1n the construction h6I'61n"(l8SCI1b6d wlthout de- I'do not wish to be restricted to the size,

1 ,ase /es parting from the spirit of the invention, it being only necessary that such changes fall within the scope of the appended claims.

What is claimed is 1. A ventilator for window sashes and the like having openings made therethrough, comprising a relatively shallow and elongated casing with its rear side open and placed against the sash about the openings, means to secure the casing to the sash, said casing being tightly closed at its sides and provided with perforations in its front wall spaced from, but in alineinent with, the openings in the sash, a plate with in the casing slidably fitted against the inner face thereof, said slide plate provided with mesh-covered apertures adapted to register with the perforations in the front wall of the casing, a yoke piece on the plate having arms extending outwardly through the perforations in the casing and having an operating piece lying in front of the casing, and a leaf having a flange at its base portion projecting forwardly and provi ding a rounded under-surface upon which the leaf is adapted to rock, said flange being weighted to normally incline the leaf toward the front part of the casing, said leaf having cut-away portions at its ends.

2. A ventilator for sashes having spacedapart openings therethrough comprising a to the outer surface of the sash about the openings and provided with a front wall,

having perforations lying in frontof t e 95 openings in the sash, a slide plate moving longitudinally within the casing against the front wall thereof to mask the perfora tions, said plate having apertures to aline with the perforations, a screen placed over 100 the perforations and carried by the plate, a yoke piece extending through the apertures connected with the plate for shifting the same, and a leaf extending substantially the height of the casing and adapted to rocl; 10

within the casing and havmg a lower round portion for supporting the leaf, said leaf being weighted to incline forwardly and having cut-away portions at its ends.

In testimony whereof, I have Iaffixed my 110 signature in presence of two witnesses.

JAoKsoN s. WILLIAMS.

i screen. secured to the inner facevof the openmgs, a th1n narrow flanged casing secured 

